Weather forecast for the week of May 6

Special to The TribuneMay 5, 2013 

Here is this week’s weather forecast by PG&E meteorologist John Lindsey.

Weather report

A 999-millibar low-pressure system about 100 miles northwest of San Luis Obispo will slowly move south down the California coastline over the next 36 hours.

This low-pressure system will draw moisture from the south, which will allow it to produce scattered rain showers throughout San Luis Obispo County today into Tuesday.

This low-pressure system will also create a favorable environment for thunderstorm development today into Tuesday across much of the Central Coast. The biggest threat from these storms is dry lightning, localized gusty outflow winds and potential for new fire starts. This will need to be monitored closely, as surface fuels remain extremely dry.

After the system exits Wednesday, temperatures will be on the rise through the end of the week and weekend as a high-pressure ridge builds; however, residual moisture and instability will keep the threat of thunderstorms over the Sierra Nevada through the end of the week.

Surf report

Today’s fresh to strong (19- to 31-mph) southerly winds will generate 4- to 5-foot southerly (180-degree shallow-water) seas (with a 3- to 5-second period) through tonight.

These southerly (180-degree shallow-water) seas will decrease to 3 to 4 feet (with a 3- to 5-secondperiod) Tuesday.

A 2- to 3-foot westerly (265-degree deep-water) swell (with a 7- to 9-second period) is forecast along our coastline for Wednesday morning.

Increasing northwesterly winds along our coastline will generate 2- to 4-foot northwesterly (310-degree shallow-water) seas (with a 4- to 6-second period) Wednesday afternoon, building to 4 to 6 feet (with a 5- to 7-second period) Thursday and remaining at this height and period through Sunday.

Seawater temperatures

Seawater temperatures will range between 53 and 55 degrees through today. Seawater temperatures will continue to rise to 54 and 56 degrees Tuesday and remain at this level through Wednesday. Seawater temperatures will decrease Thursday through Sunday.

John Lindsey’s Weekly Forecast is special to The Tribune. His Weather Watch column appears in the Local section on Sundays. Email him at pgeweather@pge.com.

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